On Mon, Jul 30, 2012 at 4:24 PM, 袁冬 <yuandong1222@xxxxxxxxx> wrote: >> - filesystem used for OSDs > Both instance use btrfs file system. Is there some difference of btrfs > between CentOS and Ubuntu? > >> - kernel version > CentOS Kernel Version: 3.4.0 > Ubuntu Kernel Version: 3.2.0 There's five months of active development between those two kernels, including plenty of btrfs work: http://kernelnewbies.org/Linux_3.4#head-8ad9e3d4ad73e1da565f52c2abbe9acf7efdc614 I'd recommend building the latest & greatest kernel, same version, on both your ubuntu and centos servers. That'll make the comparison more even. Additionally, you might want to try xfs. -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
